I very often need to find/replace multiple lines of text, and usually I do that in Notepad++ using /n escape characters. But these aren't recognized as new lines in Sublime, so I can't do multi-line find/replace. For example I often replace \n\n with \n</p><p>\n when I'm turning plain text into HTML code.
Alternatively you could allow for a multi-line dialog when finding/replacing (think textareas instead of input fields). I think that PHP Expert Edit did that back when I used it. That would also work for my purposes.
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